diff --git a/httpd.spec b/httpd.spec
index ab7425b..a92ea18 100644
--- a/httpd.spec
+++ b/httpd.spec
@@ -54,6 +54,8 @@ Provides: webserver
 Provides: mod_dav = %{version}-%{release}, httpd-suexec = %{version}-%{release}
 Provides: httpd-mmn = %{mmn}, httpd-mmn = %{mmnisa}
 Requires: httpd-tools = %{version}-%{release}, apr-util-ldap, systemd-units
+Conflicts:     systemd < 38
+Conflicts:     filesystem < 3
 
 %description
 The Apache HTTP Server is a powerful, efficient, and extensible
@@ -234,17 +236,17 @@ make DESTDIR=$RPM_BUILD_ROOT install
 popd
 
 # install alternative MPMs; executables, man pages, and systemd service files
-mkdir -p $RPM_BUILD_ROOT/lib/systemd/system
+mkdir -p $RPM_BUILD_ROOT%{_unitdir}
 for f in %{mpms}; do
   install -m 755 ${f}/httpd $RPM_BUILD_ROOT%{_sbindir}/httpd.${f}
   install -m 644 httpd.${f}.8 $RPM_BUILD_ROOT%{_mandir}/man8/httpd.${f}.8
   install -p -m 644 httpd-${f}.service \
-          $RPM_BUILD_ROOT/lib/systemd/system/httpd-${f}.service
+          $RPM_BUILD_ROOT%{_unitdir}/httpd-${f}.service
 done
 
 # Default httpd (prefork) service file
 install -p -m 644 httpd.service \
-        $RPM_BUILD_ROOT/lib/systemd/system/httpd.service
+        $RPM_BUILD_ROOT%{_unitdir}/httpd.service
 
 # install conf file/directory
 mkdir $RPM_BUILD_ROOT%{_sysconfdir}/httpd/conf.d
@@ -491,7 +493,7 @@ rm -rf $RPM_BUILD_ROOT
 %{_mandir}/man8/*
 %exclude %{_mandir}/man8/apxs.8*
 
-/lib/systemd/system/*.service
+%{_unitdir}/*.service
 
 %files tools
 %defattr(-,root,root)